Data period: through 2018

Town County Delorme Map # True Basin Flushing Rate Elevation
WILTON FRANKLIN 19 1 2.11 flushes/yr 377 ft
Maximum Depth Average Depth Surface Area Lake Volume Drainage Area
6 m
(19 ft)
4 m
(12 ft)
44 ha
(109 ac)
1,646,084 m3
(1,334 ac-ft)
6 km2
(2.2 mi2)

Secchi Disk Transparency Graphs

Graph Legend: Secchi symbols = average Secchi Disk Transparency Values; tick marks = maximum and minimum values for each year.

Water Chemistry and Trophic State Parameters

Table Legend:

Color: Color (SPU), Alk: Alkalinity (mg/l CaCO3), SpCon: Specific Conductivity (\(\mu\)S/cm), pH: pH (standard units)

TP = Total Phosphorus (\(\mu\)g/L) – EC: Epilimnion Core, SG: Surface Grab, BG: Bottom Grab, PG: Profile Grab

SDT = Secchi Disk Transparency (m) – Min: minimum value, Avg: average value, Max: maximum value, n: number of months with Secchi readings per year, b: number of times Secchi disk was observed touching the bottom of the lake per year

Chl = Chlorophyll-a (\(\mu\)g/L) – Min: minimum value, Avg: average value, Max: maximum value
Year Color Alk SpCon pH TP-EC TP-SG TP-BG TP-PG SDT-Min SDT-Avg SDT-Max SDT-n SDT-b Chl-Min Chl-Avg Chl-Max
1990 13 74 7.0 12 3.0 4.6 5.9 5 1
1991 4.4 4.8 5.2 4
1992 4.5 4.9 5.4 5
1993 4.0 4.4 4.8 3
1994 3.9 4.9 5.6 6
1998 3.3 3.9 4.7 3
1999 15 74 23 3.1 3.3 3.6 1 8.9 8.9 8.9
2000 12 66 12 5.2 5.2 5.2 1 1 4.1 4.1 4.1
2003 15 14 106 14 1.6 3.4 5.0 8 6.3 6.3 6.3
2004 3.0 3.6 4.1 8
2005 2.4 4.0 4.9 7
2006 3.6 4.1 5.0 7
2007 12 12 84 7.4 10 4.1 4.7 5.5 7
2008 3.7 4.4 5.2 8
2009 4.0 4.5 4.9 7
2010 12 4.0 4.8 5.3 8 3.5 3.5 3.5
2011 3.8 4.7 5.4 5
2012 3.8 4.6 5.2 6
2013 3.8 4.5 5.1 7
2014 3.9 4.5 5.4 7
2015 15 16 84 7.6 10 1.5 4.0 5.3 8 5.6 5.6 5.6
2016 3.8 4.6 5.4 7
2017 4.0 4.5 5.0 6
2018 4.4 4.9 5.3 6

Lake Chemistry and Trophic Summary Data - Overall Summary Values:

Avg Color Avg Alk Avg SpCon pH Avg TP-EC Avg TP-SG Avg TP-BG Avg TP-PG SDT-Min SDT-Avg SDT-Max SDT-n Chl-Min Chl-Avg Chl-Max
14 14 81 7.3 14 10 1.5 4.4 5.9 5.8 3.5 5.7 8.9

Temperature and Dissolved Oxygen Profiles

Late summer only; limited to eight most recent profiles

Units: Temperature (TEMP) = °C; Dissolved Oxygen (DO) = mg/L
1990-09-10
1999-08-11
2000-08-17
2003-08-13
2010-08-18
2015-08-19
Depth (m) TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO TEMP DO
0 22 7.7 22 7.9 23 8.2 27 8.6 25 7.5 28 8.5
1 21 7.6 22 7.8 23 8.1 26 8.5 25 7.4 27 8.5
2 21 7.6 22 7.8 23 8.1 25 8.8 24 7.4 26 9.0
3 21 7.5 22 7.8 23 8.1 24 8.2 24 7.4 25 8.8
4 21 7.5 22 7.8 23 8.1 23 4.3 24 7.4 24 6.7
5 21 7.5 21 7.5 23 8.1 21 0.4 23 3.7 22 3.5
6 20 7.2

Most recent temperature and dissolved oxygen profile plots

Temperature (°C), Dissolved Oxygen (mg/L)